Kanstantsin Kavaleu
Warszawa,Poland
Summary
Technology professional specialising in front-end development. Expertise in HTML, CSS, JavaScript, and modern frameworks like React, Next. Strong focus on creating responsive, user-friendly interfaces and optimising performance. Consistently collaborates with designers and backend developers to deliver seamless, high-quality web applications.
Overview
6
6
years of professional experience
Work History
Senior Front-End Developer
Aras
Warszaw, Poland
02.2020 - Current
- Developed custom, interactive web components using JavaScript, HTML5, and CSS3, enhancing website functionality and aesthetic appeal.
- I designed and developed large-scale front-end applications using React, Redux, React Query, and other tools from the React ecosystem.
I also used Next.js to build applications with server-side rendering (SSR), focusing on performance, scalability, and maintainable architecture. - I developed reusable web components using Lit (LitElement).
- I participated in building applications from scratch, including setting up the bundler (e.g. Vite, and the test runner, Vitest.
I implemented visual (screenshot) testing using Storybook and Playwright, and configured various development dependencies such as Prettier, ESLint, and TSDoc. - I worked with LLMs, including tools like GitHub Copilot and various models, such as Claude.
I was involved in designing AI-friendly repositories, as well as working with agents, skills, and related AI workflows.
Education
Diploma of Higher Education - Bachelor’s degree in Computer Science
Gomel State Technical University named after P.O.
Gomel2019
Skills
- JavaScript, TypeScript
- React development
- React ecosystem (core concepts, state management, data fetching, routing, performance)
- Server-side rendering (Nextjs)
- Reusable components
- Component design (UI Kit)
- Cross-browser compatibility
- LitElement
- Version Control (Git)
- CI CD using GitHub Actions
- AI integration
Languages
English
Upper Intermediate
B2
Interests
- Bord/Computer games
- Fishing
- Bicycle
Timeline
Senior Front-End Developer
Aras
02.2020 - Current
Diploma of Higher Education - Bachelor’s degree in Computer Science
Gomel State Technical University named after P.O.